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MIPS: Use early_init_fdt_reserve_self to protect DTB location

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early_init_fdt_reserve_self is used to tell the boot memory allocator
that a memory is occupied by the DTB, so add it in the MIPS init code to
ensure information about the DTB is added to the boot memory array.

Signed-off-by: Marcin Nowakowski <marcin.nowakowski@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/14610/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Marcin Nowakowski 2016-11-23 14:43:46 +01:00 committed by Ralf Baechle
parent d9b5b65821
commit 73346081ca
2 changed files with 11 additions and 0 deletions
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7
arch/mips/kernel/prom.c
View File

@ -49,6 +49,13 @@ void * __init early_init_dt_alloc_memory_arch(u64 size, u64 align)
return __alloc_bootmem(size, align, __pa(MAX_DMA_ADDRESS));
}
int __init early_init_dt_reserve_memory_arch(phys_addr_t base,
phys_addr_t size, bool nomap)
{
add_memory_region(base, size, BOOT_MEM_RESERVED);
return 0;
}
void __init __dt_setup_arch(void *bph)
{
if (!early_init_dt_scan(bph))

4
arch/mips/kernel/setup.c
View File

@ -27,6 +27,7 @@
#include <linux/device.h>
#include <linux/dma-contiguous.h>
#include <linux/decompress/generic.h>
#include <linux/of_fdt.h>
#include <asm/addrspace.h>
#include <asm/bootinfo.h>
@ -832,6 +833,9 @@ static void __init arch_mem_init(char **cmdline_p)
print_memory_map();
}
early_init_fdt_reserve_self();
early_init_fdt_scan_reserved_mem();
bootmem_init();
#ifdef CONFIG_PROC_VMCORE
if (setup_elfcorehdr && setup_elfcorehdr_size) {